<html>
<head>
<script type="text/javascript">
function disp_confirm()
  {
  var r=confirm("Press a button")
  if (r==true)
    {
    document.write("You pressed OK!")
    }
  else
    {
    document.write("You pressed Cancel!")
    }
  }
</script>
</head>
<body>

<input type="button" onclick="disp_confirm()"
value="Display a confirm box" />

</body>
</html>